Ensure default route will exist after netconfig stage is done

Fixes: #PRD-1716

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Add caching mode; cache=none breaks qemu-1.2 and 0.12 in RH derivatives
proper place
fixed biosgrub on ubuntu
Merge pull request #660 from kozhukalov/ubuntu-disks-biosgrub

fixed biosgrub on ubuntu
Enable gzip in Nginx for Nailgun 'text/plain' and 'application/json' content types
Undo murano rabbit changes
Merge pull request #664 from dmitryilyin/rabbit_undo

Undo murano rabbit changes
losted quotas
lost parameter
Quantum fixes:

* network_vlan_ranges string
* bridge mappings
* unhardcore rabbitmq default password
Merge pull request #665 from xenolog/PR1

SIMPLE: set of small fixes
drop objects_swift storage backend setting

Enable Swift if Ceph isn't selected as both images and object storage
API backend.
Merge pull request #667 from xenolog/Q32-fix-01

Quantum fixes:
Merge pull request #668 from xarses/ceph-drop-storage-objects-swift

drop objects_swift storage backend setting
Ubuntu CEPH fixes

fix error in glance::backend:ceph using wrong glance-api name
fix modssl package name
Quantum fix: losted integration bridge
Merge pull request #670 from xarses/ceph-ubuntu-fixes

Ubuntu CEPH fixes
Fixed biosgrub for ubuntu for single disk
Merge pull request #673 from kozhukalov/ubuntu-disks-biosgrub-single

Fixed biosgrub for ubuntu for single disk